5561172528066 has 24 divisors (see below), whose sum is σ = 12374861392764. Its totient is φ = 1803623522400.

The previous prime is 5561172528061. The next prime is 5561172528083. The reversal of 5561172528066 is 6608252711655.

5561172528066 is a `hidden beast` number, since 5 + 56 + 1 + 1 + 7 + 2 + 528 + 0 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4233079928025 + 1328092600041 = 2057445^2 + 1152429^2 .

It is not an unprimeable number, because it can be changed into a prime (5561172528061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4175053785 + ... + 4175055116.

Almost surely, 2^{5561172528066} is an apocalyptic number.

5561172528066 is an abundant number, since it is smaller than the sum of its proper divisors (6813688864698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561172528066 is a wasteful number, since it uses less digits than its factorization.

5561172528066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8350108946 (or 8350108943 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 5561172528066 in words is "five trillion, five hundred sixty-one billion, one hundred seventy-two million, five hundred twenty-eight thousand, sixty-six".